/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/atomic.h"#include "libavutil/avassert.h" int main(void){    volatile int val      = 1;    void *tmp1            = (int *)&val;    void * volatile *tmp2 = &tmp1;    int res;     res = avpriv_atomic_int_add_and_fetch(&val, 1);    av_assert0(res == 2);    avpriv_atomic_int_set(&val, 3);    res = avpriv_atomic_int_get(&val);    av_assert0(res == 3);    avpriv_atomic_ptr_cas(tmp2, tmp1, &res);    av_assert0(*tmp2 == &res);     return 0;}